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The accident triangle, also known as Heinrich's triangle or Bird's triangle, is a theory of industrial accident prevention. It shows a relationship between serious accidents, minor accidents and near misses. This idea proposes that if the number of minor accidents is reduced then there will be a corresponding fall in the number of serious ...
In this special case, we use the Triangular Fundamental Diagram (TFD) with three parameters: free flow speed , wave velocity -w and maximum density (see Figure 1). Additionally, we will consider a long study period where traffic past upstream detector (U) is unrestricted and traffic past downstream detector (D) is restricted so that waves from ...
Traffic collision reconstruction is the process of investigating, analyzing, and drawing conclusions about the causes and events during a vehicle collision. . Reconstructionists conduct collision analysis and reconstruction to identify the cause of a collision and contributing factors including the role of the driver(s), vehicle(s), roadway and gen
The history of the accident is reconstructed and checked for consistency and plausibility. This is also where the use of analysis methods can come into play. Hierarchy of Controls from NIOSH; Conclusion Drawing: If the accident history is sufficiently informative, conclusions can be drawn. These conclusions can be firm findings that were direct ...
The Swiss cheese model of accident causation illustrates that, although many layers of defense lie between hazards and accidents, there are flaws in each layer that, if aligned, can allow the accident to occur. In this diagram, three hazard vectors are stopped by the defences, but one passes through where the "holes" are lined up.
A warning triangle is, together with warning lights, used in order to secure a traffic accident site. The legal rules in the individual states partly order a warning triangle to be brought in the vehicle (in Germany according to § 53a StVZO). The warning triangle consists of three reflective beams, similar to a cat's eye, and a stable foot.
The method also promotes a systemic view of accident causation as the AcciMap diagram extends well beyond the most immediate causes of the event to reveal the full range of higher-level factors that contributed to the outcome (or failed to prevent it from occurring).
Tripod Beta is an incident and accident analysis methodology made available by the Stichting Tripod Foundation [1] via the Energy Institute.The methodology is designed to help an accident investigator analyse the causes of an incident or accident in conjunction with conducting the investigation.